from tkinter import * 
 
print("Введите начальную координату Х:") 
X = int(input()) 
print("Введите начальную координату Y:") 
Y = int(input()) 
print("Введите коэффициент увеличения N:") 
N = int(input()) 
cords = [0,0,10,0,10,10,20,10,20,20,10,20,10,30,0,30,0,0] 
 
if N == 0 and X>=0 and X<=500 and Y>=0 and Y<=500: 
    pass 
else: 
    if N> 0 and 0*N+X>=0 and 0*N+Y>=0 and 20*N+X<=500 and 20*N+Y<=500: 
        pass  
    else: 
        if N < 0 and 20*N+X>=0 and 20*N+Y>=0 and 0*N+X<=500 and 0*N+Y<=500: 
            pass  
        else: 
            print("Размер фигуры превышает максимальный размер поля") 
            exit() 
root = Tk() 
root.title( "ИТ марафон") 
root.geometry ("500x500") 
             
canvas = Canvas(bg="white", width=500, height=500) 
canvas.pack(anchor=CENTER, expand=1) 
canvas.create_polygon(cords[0] *N+X, cords[1] *N+Y, 
cords[2] *N+X, cords[3] *N+Y,                                                                                                                                                                                                             coords[4] *N+X, coords[5] *N+Y, coords[6] *N+X, coords[7] *N+Y, coords[8] *N+X, coords[9] *N+Y, coords[10]*N+X, coords[11]*N+Y) 

root.mainloop()